EP0185994A3 - Arrangement for forming directional channels by reception of wave energy - Google Patents

Arrangement for forming directional channels by reception of wave energy Download PDF

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Publication number
EP0185994A3
EP0185994A3 EP85115431A EP85115431A EP0185994A3 EP 0185994 A3 EP0185994 A3 EP 0185994A3 EP 85115431 A EP85115431 A EP 85115431A EP 85115431 A EP85115431 A EP 85115431A EP 0185994 A3 EP0185994 A3 EP 0185994A3
Authority
EP
European Patent Office
Prior art keywords
omega
frequency
reception
wave energy
modulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85115431A
Other languages
German (de)
Other versions
EP0185994A2 (en
EP0185994B1 (en
Inventor
Dirk Dr. Rathjen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fried Krupp AG
Original Assignee
Fried Krupp AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fried Krupp AG filed Critical Fried Krupp AG
Priority to AT85115431T priority Critical patent/ATE50871T1/en
Publication of EP0185994A2 publication Critical patent/EP0185994A2/en
Publication of EP0185994A3 publication Critical patent/EP0185994A3/en
Application granted granted Critical
Publication of EP0185994B1 publication Critical patent/EP0185994B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/74—Multi-channel systems specially adapted for direction-finding, i.e. having a single antenna system capable of giving simultaneous indications of the directions of different signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/8006—Multi-channel systems specially adapted for direction-finding, i.e. having a single aerial system capable of giving simultaneous indications of the directions of different signals

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Optical Communication System (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Waveguide Aerials (AREA)

Abstract

1. Device for determining the direction of reception in the reception of wave energy of known centre frequency and bandwidth, comprising a receiving arrangement (10) exhibiting several receiving transducers, and comprising light-emitting elements (12) which follow the receiving transducers and are actuated by them, the geometric arrangement of which elements corresponds to the receiving arrangement on a reduced scale, having at least one acousto-optical modulator (13) which follows the elements and which is connected together with a signal generator (20) and to which modulated carrier-frequency sound waves are applied transversely to the direction of light transmission, which sound waves exhibit a modulation frequency corresponding to the required directions of reception to be instantaneously formed, and comprising a collecting lens (33) which follows the acousto-optical modulator, characterized in that the signal generator (20; 100; 200) exhibits carrier-frequency modulators (21, 22, ..., 25 and 120, 121, ..., 129) for a number of different preset carrier frequencies (OMEGA 1 , ..., OMEGA 5 ) which are allocated to the directions of reception to be formed, and for an equal number of adjustable modulation frequencies (omega 1 ; ..., omega 5 ), each carrier frequency (OMEGA 1 , ..., OMEGA 5 ) forming, together with the modulation frequency (omega 1 , ..., omega 5 ), a direction channel, and in that behind the collecting lens (33; 233) an equal number of light-sensitive sensors (40) is arranged at focal points of light beam bundles allocated to the direction channels, in that each sensor (40, 41, ..., 45) is followed by two filters (51, ..., 55, 61, ..., 65), in that one filter (51, ..., 55) is designed to pass the sum frequency (omega w + omega 1 ;..., omega w + omega 5 ) of modulation frequency (omega 1 , ..., omega 5 ) and centre frequency (omega w ) of the wave energy and the other filter (61, ..., 65) is designed to pass the difference frequency (omega w - omega 1 , ..., omega w - omega 5 ) of centre frequency (omega w ) of the wave energy and modulation frequency (omega 1 , ..., omega 5 ), and in that each filter (51, ..., 55, 61, ..., 65) is connected to a direction indicator (70, 270).
EP85115431A 1984-12-13 1985-12-05 Arrangement for forming directional channels by reception of wave energy Expired - Lifetime EP0185994B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85115431T ATE50871T1 (en) 1984-12-13 1985-12-05 DEVICE FOR DIRECTIONAL DEVELOPMENT WHEN RECEIVING WAVE ENERGY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3445373 1984-12-13
DE19843445373 DE3445373A1 (en) 1984-12-13 1984-12-13 DEVICE FOR DIRECTIONING WHEN RECEIVING WAVE ENERGY

Publications (3)

Publication Number Publication Date
EP0185994A2 EP0185994A2 (en) 1986-07-02
EP0185994A3 true EP0185994A3 (en) 1986-10-01
EP0185994B1 EP0185994B1 (en) 1990-03-07

Family

ID=6252613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115431A Expired - Lifetime EP0185994B1 (en) 1984-12-13 1985-12-05 Arrangement for forming directional channels by reception of wave energy

Country Status (3)

Country Link
EP (1) EP0185994B1 (en)
AT (1) ATE50871T1 (en)
DE (2) DE3445373A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2202942B (en) * 1987-03-21 1991-08-21 Ferranti Plc Production of directionally limited acoustic power spectra
DE3744051A1 (en) * 1987-12-24 1989-07-06 Krupp Atlas Elektronik Gmbh DEVICE FOR DETERMINING TARGET DATA
DE3839343A1 (en) * 1988-11-22 1990-05-23 Geron A Loebbe Ultrasound camera
JP2702876B2 (en) * 1993-09-08 1998-01-26 株式会社石川製作所 Sound source detection device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2115572A (en) * 1982-02-23 1983-09-07 Standard Telephones Cables Ltd An acousto-optic heterodyne signal processing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2115572A (en) * 1982-02-23 1983-09-07 Standard Telephones Cables Ltd An acousto-optic heterodyne signal processing device

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
EASCON 79, IEEE Electronics and Aerospace systems Conference, Part III, 1979, Seiten 602-609, IEEE, New York, US; G. HETLAND et al.: "Optical sonar system concepts" *
IBM TECHNICAL DISCLOSURE BULLETIN, Band 22, Nr. 5, Oktober 1979, Seite 2073, IBM Corp., New York, US; C.H. CLAASSEN: "Efficiency stabilization for multi-beam acousto-optic modulators" *
PROCEEDINGS OF THE IEEE, Band 72, Nr. 7, Juli 1984, Seiten 820-830, IEEE, New York, US; W.T. RHODES et al.: "Acoustooptic algebraic processing architectures" *

Also Published As

Publication number Publication date
EP0185994A2 (en) 1986-07-02
EP0185994B1 (en) 1990-03-07
DE3445373A1 (en) 1986-06-19
DE3576413D1 (en) 1990-04-12
ATE50871T1 (en) 1990-03-15

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